-
Some styles are spring-actuated for immediate closure when flow stops.
有些类型止回阀配置弹簧驱动，能够在流动停止时，立即关闭阀门。
youdao
-
Limit switch, directly actuated, spring returned, normally closed.
直接启动、弹簧复位、正常闭合的限制开关。
youdao
-
Limit switch, directly actuated, spring returned, normally closed.
直接启动、弹簧复位、正常闭合的限制开关。
youdao